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address review comments
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matthiaskrgr committed Mar 22, 2024
1 parent bd2d70d commit e68cb00
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Original file line number Diff line number Diff line change
Expand Up @@ -3,18 +3,11 @@
#![feature(generic_const_exprs)]
#![allow(incomplete_features)]

pub fn String<V>(elem)
//~^ ERROR expected one of `:`, `@`, or `|`, found `)`
pub fn foo()
where
V: 'a,
//~^ ERROR use of undeclared lifetime name `'a`
for<const N: usize = { || {}}> V: 'a,
//~^ ERROR use of undeclared lifetime name `'a`
//~^^ ERROR only lifetime parameters can be used in this context
//~^^^ ERROR defaults for generic parameters are not allowed in `for<...>` binders
for<C2: , R2, R3: > <&str as IntoIterator>::Item: 'static,
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//~^^ ERROR only lifetime parameters can be used in this context
for<const N: usize = { || {}; 1 }> ():,
//~^ ERROR only lifetime parameters can be used in this context
//~^^ ERROR defaults for generic parameters are not allowed in `for<...>` binders
{}

pub fn main() {}
Original file line number Diff line number Diff line change
@@ -1,92 +1,19 @@
error: expected one of `:`, `@`, or `|`, found `)`
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:6:22
|
LL | pub fn String<V>(elem)
| ^ expected one of `:`, `@`, or `|`
|
= note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
help: if this is a `self` type, give it a parameter name
|
LL | pub fn String<V>(self: elem)
| +++++
help: if this is a parameter name, give it a type
|
LL | pub fn String<V>(elem: TypeName)
| ++++++++++
help: if this is a type, explicitly ignore the parameter name
|
LL | pub fn String<V>(_: elem)
| ++

error[E0261]: use of undeclared lifetime name `'a`
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:9:8
|
LL | V: 'a,
| ^^ undeclared lifetime
|
= note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider making the bound lifetime-generic with a new `'a` lifetime
|
LL | for<'a> V: 'a,
| +++++++
help: consider introducing lifetime `'a` here
|
LL | pub fn String<'a, V>(elem)
| +++

error[E0261]: use of undeclared lifetime name `'a`
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:11:39
|
LL | for<const N: usize = { || {}}> V: 'a,
| ^^ undeclared lifetime
|
help: consider making the bound lifetime-generic with a new `'a` lifetime
|
LL | for<'a, const N: usize = { || {}}> V: 'a,
| +++
help: consider introducing lifetime `'a` here
|
LL | pub fn String<'a, V>(elem)
| +++

error[E0637]: `&` without an explicit lifetime name cannot be used here
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:15:26
|
LL | for<C2: , R2, R3: > <&str as IntoIterator>::Item: 'static,
| ^ explicit lifetime name needed here
|
help: consider introducing a higher-ranked lifetime here
|
LL | for<'a> for<C2: , R2, R3: > <&'a str as IntoIterator>::Item: 'static,
| +++++++ ++

error[E0658]: only lifetime parameters can be used in this context
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:11:15
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:8:15
|
LL | for<const N: usize = { || {}}> V: 'a,
LL | for<const N: usize = { || {}; 1 }> ():,
| ^
|
= note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
= help: add `#![feature(non_lifetime_binders)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date

error[E0658]: only lifetime parameters can be used in this context
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:15:9
|
LL | for<C2: , R2, R3: > <&str as IntoIterator>::Item: 'static,
| ^^ ^^ ^^
|
= note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
= help: add `#![feature(non_lifetime_binders)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date

error: defaults for generic parameters are not allowed in `for<...>` binders
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:11:9
--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:8:9
|
LL | for<const N: usize = { || {}}> V: 'a,
| ^^^^^^^^^^^^^^^^^^^^^^^^^
LL | for<const N: usize = { || {}; 1 }> ():,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 7 previous errors
error: aborting due to 2 previous errors

Some errors have detailed explanations: E0261, E0637, E0658.
For more information about an error, try `rustc --explain E0261`.
For more information about this error, try `rustc --explain E0658`.
Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,7 @@ impl<T> MyFrom<Phantom2<T>> for Phantom1<T> {
}

impl<T: MyFrom<Phantom2<DummyT<U>>>, U> MyIndex<DummyT<T>> for Scope<U> {
//~^ ERROR the type parameter `T` is not constrained by the impl trait, self type, or predicates
//~^ ERROR the type parameter `T` is not constrained by the impl
type O = T;
fn my_index(self) -> Self::O {
MyFrom::my_from(self.0).ok().unwrap()
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